SFM to Blender Conversion
You'll first need to decompile the .mdl file into an .smd file. Crowbar is an excellent tool to decompile mdl files, find it here: Crowbar (Source Engine Modding Tool)



After that, you can use the Blender source tools as 8foldhero suggested: BlenderSourceTools
Install it as an addon like usual, and you'll be able to import any smd file into Blender by going to File &gt; Import &gt; Source Engine (.smd, .vta, .dmx, .qc), then choose the file from the dialog box. I recommend changing the Bone Append Mode to Make New Armature. Good Luck!